Enamel Surface Roughness after Orthodontic Bracket Debonding and Composite Resin Removal by Two Types of Burs

摘要: Objective: Increased enamel surface roughness following orthodontic bracket debonding leads to increased plaque accumulation and decalcification. Therefore, different methods are employed achieve smoother surfaces after debonding. This study compared composite resin removal using white stone tungsten carbide burs. Methods: In this in-vitro, experimental study, 20 first second premolars of 10-20 year-olds were collected their crowns mounted in acrylic blocks. Roughness the buccal teeth was determined by atomic force microscopy (AFM) brackets bonded teeth. After debonding, remnants removed Parameters AFM time required for also calculated. Repeated measures ANOVA used assess changes parameters based on measurement, type bur interaction effect. Time analyzed one-way Tukey’s multiple comparisons. Results: Resin baseline values all groups. However, no significant differences noted between two types burs regarding arithmetic average profile (Ra), root mean square (Rq) maximum peak-to-valley height sampling length (Rt) removal. with (34.2 seconds) significantly shorter than (56.6 seconds)(both ps<0.0001). Conclusion: Considering similar achieved burs, recommended